Note - Spoilers below
Concept was interesting and overall background layout seemed enough to keep me watching through S1. The story itself was kind of... Half thought out? It seemed after the first series of events it just started jumping from one random event to another. And by the end, it really seemed like there was no one who could challenge the MC... Or even just the Students from the high school. One of the best agents from the foreign groups was taken down by high schoolers? Seriously? And the MC was literally just so broken it became dull at that.
I ended up liking more of the support characters than the MC's, i did like the magic sequence take on it though, it was interesting.